Sewing – Elements – Frames
Patent
1991-09-19
1992-07-28
Schroeder, Werner H.
Sewing
Elements
Frames
112 10, 11212114, 112130, 112141, 112147, 112304, 112122, D05B 3502, D05B 3700
Patent
active
051332736
ABSTRACT:
Sheet material 30 is taken from a supply 32 and is cut by cutter 36 into segments 35. The segments are moved rapidly parallel to their cut edges into a slower operating first sewing station 40 where elastic bands are sewn to the side edges of the segments. The rapidly moving trailing portion of the segment 35 of sheet material is temporarily accumulated at the accumulation station 39 and progressively fed at a slower rate through the first sewing station 40. The side edges are folded into overlying relationship with respect to the main body portion at folding station 42. Sewing machines 64 and 165 are moved inwardly of the sewing path to simultaneously cut and sew diagonal corners at the trailing and leading edges of the segments, with the sewing machines pivoting so as to face the relative movement of the sheet material, and the removed corners 25 and elastic banding 21 are pulled away from the work product by a vacuum system 186.
REFERENCES:
patent: 3160080 (1964-12-01), Frydryk
patent: 3906878 (1975-09-01), Burton
patent: 4648336 (1987-03-01), Ragnebring
patent: 4685408 (1987-08-01), Frye
patent: 4742788 (1988-05-01), Dugan
patent: 4754717 (1988-07-01), Henze et al.
patent: 4773341 (1988-09-01), Brocklehurst
patent: 4856442 (1989-08-01), Brocklehurst
patent: 4856444 (1989-08-01), Brocklehurst
Lewis Paul C.
Schroeder Werner H.
Sew Simple Systems, Inc.
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